Crosby enlisted with a Connecticut regiment in the first weeks of the war.
From 1777 to 1778 he served as a lieutenant in 2nd Connecticut Regiment.
He joined a Connecticut regiment for service in the Revolution.
Following close behind were Parson's Connecticut regiment with 251 men.
He became a sergeant on September 1, 1777, and ended the war with the 2nd Connecticut Regiment.
On January 1, 1777, he was commissioned as a colonel of the Connecticut 6th Regiment.
He served in Connecticut regiments during the Civil War.
(The 4th Connecticut Regiment was disbanded on January 1, 1783).
Putnam served with a Connecticut regiment during the French and Indian War.
The town of Greenwich contributed a total 437 men to twenty-six Connecticut regiments during the Civil war.