Thousands of people gathered at the Atlantic Wharf in Rockland on June 17, 1861, to bid farewell to the local men who made up the Fourth Maine Infantry volunteer regiment and were headed off to fight in the Civil War.

The 150th anniversary of that event is Friday.

The infantry formed less than two weeks after the Confederacy attacked Fort Sumter in South Carolina. The first meeting of the local infantry was April 23, according to “With Our Faces to the Foe,” a book by Peter P. Dalton.

Seventy-three people signed up to serve at that first meeting. On the day of heading off to war on June 17, more than 1,000 men from Winterport to Wiscasset were in Rockland.

The citizen soldiers would train for six weeks at Camp Knox in Rockland before being sent off to fight in what would turn out to be a four-year war. The regiment served nearly three years.

The group was referred to as both the Limerock Regiment and the Fighting Tigers. The book by Dalton notes that they suffered heavy casualties. The soldiers held annual meetings upon the conclusion of the war.

A monument stands at the site across from where Camp Knox was located at the top of Talbot Avenue.