How Wartime Purges Are Reshaping U.S. Military Doctrine?

No nation, no people, and no institution has been shielded from the turmoil unleashed by the US-Israel-Iran War. Yet perhaps the most surprising upheaval has unfolded not on the battlefield, but within the ranks of the world's most powerful military. Secretary of War Pete Hegseth has launched a sweeping purge of its highest ranks, ousting top officials in a manner more reminiscent of an authoritarian regime consolidating power than a democracy safeguarding its national security.

This restructuring raises unsettling questions about the road ahead. Is Hegseth reshaping the military to serve a political agenda rather than a strategic one? Is Hegseth attempting to protect his position? Is there significant internal resistance to the War? And perhaps most critically — who, ultimately, does this new military answer to?

On April 2, 2026, Hegseth removed Army Chief of Staff Gen. Randy George, along with two other Army generals, Gen. David Hodne of the Army’s Transformation and Training Command and Maj. Gen. William Green of the Army’s Chaplain Corps. The oustings have not stopped at top military personnel as reaching top civilian posts, with Hegseth firing Navy Secretary John Phelan on April 22.

To understand the purge, one must first understand the man orchestrating it. Hegseth appears to be operating on multiple fronts simultaneously — enforcing ideological conformity within the military, championing an aggressive war strategy, and, perhaps most troublingly, safeguarding his own political survival.

Therefore, the dismissal of Gen. Randy George could be linked to his clash with Hegseth over the latter’s push to remove two Black and two female officers from a promotion list while George defended their service. Moreover, there is disagreement over a ground operation in Iran and whether the military should take such a step or not.

Beneath the purges may also lie a more self-preserving motive. Hegseth’s grip on his position has never been entirely secure, particularly following the 2025 Signalgate scandal, in which he used a personal phone and the messaging app Signal to discuss classified military strike plans against Houthis in Yemen. His most immediate threat, however, appears to be Army Secretary Dan Driscoll who is reportedly backed by his close friend and former classmate Vice President JD Vance.

Notably, Driscoll was also a close ally of Gen. Randy George. Reports indicate the administration blocked Hegseth from firing Driscoll directly, leaving him with little choice but to dismantle Driscoll’s support network from the outside, eliminating close allies to weaken his standing without risking a direct confrontation.

Understandably, Hegseth’s behaviour isn’t new, but it is a significant characteristic of the administration. Trump’s administration – during the 1st and 2nd terms – has shown a pattern of inserting political agenda into non-political spheres, such as public institutions and civil service appointments. Such actions bring into question the rationale behind Trump’s hiring and firing personnel.

During both Trump administrations, the core of checks and balances; intelligence, judiciary, military, and federal key positions, have been largely politicized and handed to loyalists. What Trump branded as “draining the swamp” during his first term, has manifested in practice as the systematic replacement of independent voices with political loyalists, resulting in increased polarisation, expanding his executive influence, and to avoid accountability for his actions.

Nowhere was this tension more visible than in the military. During his first term, Trump couldn’t fully bring the Pentagon under his control, facing consistent resistance from senior military leaders who were determined to keep the institution non-political. Secretary of Defense James Mattis and Chairman of the Joint Chiefs Mark Milley frequently pushed back against Trump’s impulses. At that time, key positions were mostly held by career officials who saw their role as a check on political overreach rather than an instrument of it.

However, this dynamic has changed in Trump’s second term, as he sought “yes men” to lead the Department of Defense while removing other officials. For instance, Trump removed officers who served during the Biden administration, firing the chairman of the Joint Chiefs of Staff, Air Force General C.Q. Brown, the head of the U.S. Coast Guard, Admiral Linda Fagan, in addition to pushing out admirals, generals, and firing civilian staff in the Pentagon.

It’s common that civilian leadership in the Pentagon changes from one administration to the other, but uniformed members of the US Armed Forces are supposed to be apolitical, executing the policies of both the Democratic and Republican administrations. Nevertheless, Trump has worked to politicise the Pentagon through Hegseth. Therefore, the ongoing purges can be interpreted as a part of a broader effort to reshape the Pentagon’s leadership along ideological lines. Hegseth has been working to align senior military officials more closely with the administration’s agenda and his own. For example, Gen. Christopher LaNeve, the acting Army Chief of Staff, is Hegseth’s former military assistant.

This raises questions about whether Trump solely prioritises loyalty over expertise or if political liability creates a reason for dismissals. Lately, he fired former loyal US Attorney General Pam Bondi, due to mishandling the release of Epstein files and her inability to successfully prosecute his opponents, people he considers “enemies.” Additionally, he fired former US Secretary of Homeland Security Kristi Noem, due to mishandling the killing of Minneapolis protestors, Alex Pretti and Renee Good, refusing to retract labelling them as “domestic terrorists”, and linking Trump directly to the controversial spending of a $220 million DHS advertising campaign.

Loyalty to Trump, it appears, is necessary but not sufficient. Loyalists who prove incompetent are tolerated until their failures begin to reflect poorly on the administration and on Trump personally at that point, they become a political liability and are expendable. The pattern, therefore, is not simply one of rewarding loyalty, but of retaining those who are both loyal and capable of avoiding embarrassment.

The latest military purges illustrate this clearly, driven largely by the fallout of the Iran war on the administration and the decline in Trump’s approval ratings. Hegseth, having lived through both Signalgate and the mixed reception of the Iran war, is arguably acutely aware of how quickly the calculus can shift. This may explain his move to preemptively consolidate his position, purging those around him who could serve as convenient scapegoats or potential rivals, before Trump’s gaze turns in his direction.

This logic of appointments and dismissals, however, carries serious institutional costs. Officers who believe that disagreement could cost them their positions are incentivised to comply rather than advise, creating a culture where poor decisions go unchallenged and groupthink flourishes. The advisory process, one of the military’s most critical functions, is hollowed out as a result. Over time, continuing this approach risks not only undermining the effectiveness of the US Military, but eroding public confidence in the independence of the institutions meant to serve the state rather than the person occupying it.

These purges may be signalling a deeper shift in historically independent institutions and the dynamics of checks and balances. The military, in particular, has long operated on an apolitical doctrine. If key positions are filled with officials selected not for their competence or integrity but for their willingness to subordinate the constitution to Trump’s goals, the result is no longer a military that serves the state, it becomes one that serves the administration. Should that threshold be crossed, the consequences for the country would be profound, with political loyalty displacing institutional independence as the organising principle of the US Military.

Within this context, Hegseth’s ouster appears increasingly likely as a means of containing the backlash. Like Bondi and Noem before him, he may be sacrificed for his failure to shield Trump from criticism, most notably his performance  during his congressional testimonies, similar to both Bondi and Noem.

Should Hegseth be replaced, his successor will almost certainly be an administration-backed loyalist, but the style of leadership could take one of two directions. The first is a stabilising figure, one who slows or halts the purges, works to restore confidence within the Pentagon, and attempts to channel dissenting military advice toward Trump in a more palatable form. The second is a more effective executor of the same agenda, someone who pursues the administration’s goals with greater discipline, replacing chaotic confrontation with the quieter installation of competent loyalists. In either scenario, the underlying objectives set by the President are unlikely to change; what may shift is the coherence between military operations and political messaging.

Finally, the longer-term implications extend beyond any single appointment. Trump has openly talked about serving a third term, a possibility constitutionally barred by the 22nd Amendment. Yet his track record of testing legal and institutional limits makes this worth taking seriously. A sufficiently politicised military would be a critical instrument in consolidating executive power beyond its intended constraints, transforming what began as personnel decisions into something with far graver consequences for American democracy.

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