 Complete the following phrase:  Yi Gwal thought he was treated unfairly and received too small reward for his role in the coup. In 1624, he rebelled against Injo after being sent to the Northern front as military commander of Pyongyang to fight against the expanding Manchus, while other major leaders of the coup were rewarded with positions in the Kings court. Yi Gwal led 12,000 troops, including 100 Japanese who defected to Joseon during 