Internet Archive has a free, online copy of The Record of Connecticut Men in the Military and Naval Service during the War of the Revolution 1775-1783, the War of 1812, and the Mexican War.

This is three separate texts in one book with Connecticut military service in the Revolutionary War comprising the first 779 pages, a record of Connecticut men who served in the Regular Army and the Militia in the War of 1812, in the second portion of the book, and a record of Connecticut men serving in the Regular Army during the Mexican War in the last portion of the book. Each section has an alphabetized index of names and the Revolutionary War section also has a list of Revolutionary War pensioners during different years.