There have been attempts to produce a military strength index: this is an example taken from a Credit Suisse report in September 2015. The factors under consideration for that military strength indicator and their total weights were: number of active personnel in the army (5%), tanks (10%), attack helicopters (15%), aircraft (20%), aircraft carriers (25%), and submarines (25%). It was practically impossible to make an estimation of the actual training of the armed forces.  These were the results:
Figure 2.7 shows FY 1977 as the low point and FY 1992 as the high point in accessing recruits in Categories I to IIIA. In FY 1977, 34 percent of accessions scored in the top half of the AFQT distribution. Only 13 percent of Blacks, 19 percent of Hispanics, and 20 percent of "Others" scored in Categories I–IIIA.  Fifteen years later, in FY 1992, the majority of minority accessions achieved scores in the I–IIIA range (Blacks - 56 percent, Hispanics - 67 percent, "Others" - 67 percent). Hispanics have shown the most marked increase, with a 48-percentage-point gain in Category I to IIIA accessions from FY 1977 to FY 1992.
The Assembling Objects section of the ASVAB practice test measures your ability to determine how an object will look when its parts are put together. You will be shown an illustration of pieces and asked to choose which one, among a selection of finished diagrams, shows how they fit together. The CAT-ASVAB has 16 questions in 16 minutes, while the paper-and-pencil version has 25 questions in 15 minutes.
Under the Montgomery GI Bill, the Army, Navy, Air Force, Marine Corps and Coast Guard (and their Reserves and the National Guard) provide a cash education incentive to encourage you to join and serve a tour of duty. The Montgomery GI Bill (MGIB) provides up to 36 months of education benefits to eligible veterans for college, business, technical or vocational courses, correspondence courses, apprenticeship/job training and flight training. MGIB benefits may be used while on active duty or after a fully honorable discharge from active duty.
In the 2000s, women can serve on U.S. combat ships, including in command roles. They are permitted to serve on submarines. Women can fly military aircraft and make up 2% of all pilots in the U.S. Military. In 2003, Major Kim Campbell was awarded the Distinguished Flying Cross for landing her combat damaged A-10 Thunderbolt II with no hydraulic control and only one functional engine after being struck by hostile fire over Baghdad.