Subsequent military vehicles and associated equipment were acquired from dealers, collectors, or in trade with various museums or government agencies in the United States and abroad.

The oldest armored military vehicle in the collection is a World War I era M1917 light tank.

[1] Over 200 armored fighting vehicles were present in the collection,[2] displayed in a 48,000 square feet (4,500 m2) exhibition space at Littlefield's 470-acre (190 ha) Pony Tracks Ranch in the Vista Verde neighborhood.

The ranch was once owned by former San Francisco Mayor and California Governor "Sunny Jim" Rolph.

[7][8] The Planning Board rejected the foundation's application in August 2015[9] but a settlement was eventually reached in July 2017 and construction of the museum was completed in 2018.