“The T-60 series of Power Armor saw extensive use by the United States Army after the Battle of Anchorage. In fact, soldiers in T-60 Power Armor were among those trying to retain order on October 23, 2077 - the day America fell to atomic war...”
The T-60 series of powered combat infantry armor is an evolution of the T-45 power armor design. Following quiet testing between the government and West Tek, as part of its long-standing defense contract, the T-60 entered service after the conclusion of the Battle of Anchorage, mere months before the nuclear apocalypse, the T-60 was rapidly deployed and extensively used by the U.S. Army in all theaters. Deployments of military units in T-60 power armor included the domestic front, enforcing order in the nation.
By the time of the Great War it was considered to be the most advanced model of power armor to see extensive use.