There has been a definite and disturbing effort the past few years to push secularism out of the U.S. military.
Group: Airman denied reenlistment for refusing to say 'so help me God' (Air Force Times)
An atheist airman at Creech Air Force Base in Nevada was denied reenlistment last month for refusing to take an oath containing “so help me God,” the American Humanist Association said Thursday.
...
According to the AHA, the unnamed airman was told Aug. 25 that the Air Force would not accept his contract because he had crossed out the phrase “so help me God.” The airman was told his only options were to sign the religious oath section of the contract without adjustment and recite an oath concluding with “so help me God,” or leave the Air Force, the AHA said.
That is unconstitutional and unacceptable, the AHA said.