The term 'Army Training Site' can be broken down into four crossword solutions: BASIC (5 letters), BASE (4 letters), MESA (4 letters), and CAMP (4 letters). BASIC stands for BASIC Army Training, which is the initial training that all new recruits must complete before they can join the Army. BASE is an acronym for BASE Army Station, which is a permanent military installation where soldiers are stationed. MESA stands for Military Education and Simulation Area, which is a facility used to train soldiers in simulated combat scenarios. Finally, CAMP stands for Combat Arms Military Post, which is a military BASE used to train soldiers in combat tactics.