was he involved in the american revolution?
Yes, he was a soldier in the American Revolutionary War
John Trumbull
a soldier in the American Revolutionary War, 
who wrote we hold these truths to be self evident UNANSWERABLE when was the us declaration of independence promulgated? 1774 what did it stand for? With the Declaration, the new states took a collective first step toward forming the United States of America. which famous painting did it inspire? "Declaration of Independence" who painted it? John Trumbull
wiki:4797430
John Trumbull [SEP] Revolutionary War
As a soldier in the American Revolutionary War, Trumbull rendered a particular service at Boston by sketching plans of the British and American lines and works. He witnessed the Battle of Bunker Hill. He was appointed second "aide-de-camp" to General George Washington, and in June 1776, deputy adjutant-general to General Horatio Gates. He resigned from the army in 1777 after a dispute over the dating of his officer commission. In 1780, with funds depleted, Trumbull turned to art as a profession. He traveled to London, where upon introduction from Benjamin Franklin, Trumbull studied under Benjamin West. At West's suggestion, Trumbull painted small pictures of the War of Independence and miniature portraits.