The 1st Battalion, 143rd Field Artillery's current mission is to shoot safely, accurately, and quickly in direct support of the 79th Infantry Brigade Combat Team.

Furthermore, the battalion trains to deploy, fight, and win on the battlefield and respond effectively to any state emergency.

[1] The first battalion was most recently activated for federal service in support of Operation Iraqi Freedom from 2007 to 2008.

The subordinate batteries of 1-143 FA executed force protection missions throughout central and northern Iraq.

Battery A mustered into federal service in San Francisco between 6 and 11 May 1898, along with the rest of the battalion.