Artemas began his military career when he was commissioned as a major on January 28, 1755. He did not see active service for two and a half years after his appointment, but instead carried out his duties in the Worcester militia and continued to serve in several political offices. Artemas had no prior military experience, so his commission as a major was likely due to his family's position and his education at Harvard.
By this time a lieutenant colonel, Artemas had his first taste of combat in the failed British assault on French-held Fort Ticonderoga. Even though the campaign did not succeed, Ward gained valuable experience as a provincial officer serving under seasoned commanders.
Nahum Ward died. The house was left to his sons Artemas and Elisha.
After receiving his degree at Harvard College, Artemas taught school for a time in Groton MA. He married Sarah Trowbridge and returned to Shrewsbury. The newlyweds started a family, ran a General Store in the center of town and became respected members of the community.
Henry Galbraith Ward sold the farm to his brother Artemas Ward (the grocer and advertiser) for $2043.