So, when Kutuzov 4 commander-in-chief on August 17, 1812, Russians supported him.

1. The sentence describes an event that led to Russian support. The options include 'MAKE'.
2. The structure 'when Kutuzov X commander-in-chief' requires a verb in the past tense indicating his appointment.
3. The word 'MAKE' is transformed into 'was made' to fit the passive voice and past tense, indicating he was appointed.
Final Answer:

was made