He saw extensive service in the American colonies in the late 18th century and upon Britain's takeover of Spanish Florida in 1763, he drafted a current map of St. Augustine the capital of East Florida, and its defenses while serving under military governor James Grant.
This morning cold and white frost.Moncrief was briefly captured by an American raid on the Flatlands Jans Martense Schenck house as part of the Whaleboat War in 1788.
He later became Chief Engineer responsible for the defenses during the Siege of Savannah by combined American and French forces in 1779 [5] and took part in the Battle of Stono Ferry in South Carolina.
After Lord Cornwallis' surrender at Yorktown he wrote General Clinton in New York to remind him of the invaluable service to Britain performed by those under his command while building the defenses at Savannah and Charleston and offered to continue the war with a brigade of African American soldiers.
[9] He then served under the Duke of York and Albany in the Low Countries during the War of the First Coalition against Revolutionary France and took part in the Siege of Valenciennes in 1792.