People I serve with try to tell me that the Army aligns itself with Christianity. Do you think that the Army is a religious-based entity?

Of course not. That's silly. The Army provides for the religious needs of its members just as it provides for every other need such as food, shelter, clothing, healthcare and rehabilitation, entertainment, postal services, etc., etc.m etc. I have met chaplains of every faith and each is trained to minister to service members of other faiths in emergencies (which are routine on the battlefield). However, it may be argued that the US military is somewhat different than most others in that it recognizes that all service members are citizens of a society in which individual freedom and responsibility are highly valued. This is a Judeo-Christian concept, unlike others in which people do not have free will and have been taught from birth to obey authority (clerics) inasmuch as they are led by animal instincts and cannot be trusted with such freedom, cannot be held responsible for behaviors induced by outside influences.

no - it is not religious based - but the US is a majority christian country, makes sense that the services have a majority christian based population.

No it is not.