Why would Poland or the US Marine Corps hesitate to rely on the M1 Abrams?
Short answerThe tank is capable but costly to sustain; its logistics burden is especially difficult for forces that cannot support it on the US Army's scale.
NotesThe M1 Abrams is described as an excellent tank whose performance carries extraordinary fuel and support demands. The United States Army can sustain that burden at a scale most other forces cannot easily reproduce. A diesel export variant is mentioned as a longstanding possibility, though buyers had not taken it up. A tank accompanying missile troops ashore could still provide useful protection and direct fire in littoral operations. The Marine Corps' move away from Abrams is therefore treated as a logistical choice, without dismissing armor's value in the mission.