Answer:
The foreign born Continental Army officer who was considered a brilliant combat engineer and played an important role in many battles, especially in Saratoga, was Tadeusz Kosciuszko.
Explanation:
Tadeusz Kosciuszko was a Polish officer who participated in the American Revolutionary War and organized an insurrection against Russian and Prussian domination in 1794. He is now considered a national hero in Poland, Belarus, Lithuania and the United States.
After learning of the start of the War of Independence, he came to America. Joining the Continental Army with the rank of colonel, he participated in the Battle of Saratoga and helped build the defenses of Fort West Point. In recognition of his services, he was promoted to brigadier-general by the Continental Congress.
After his return to Poland in 1784, Kosciuszko tried without much success to administer the family property before joining the Polish-Lithuanian army. His military successes during the Russo-Polish War of 1792 did not prevent the second partition of Poland.
