She fought in the major Russian engagements of the 1806-1807 Prussian campaign. During two of those battles, she saved the lives of two fellow Russian soldiers. The first was an enlisted man who fell off his horse on the battlefield and suffered a concussion. She gave him first aid under heavy fire and brought him to safety as the army retreated around them. The second was an officer, unhorsed but uninjured. Three French dragoons were closing on him. She couched her lance and scattered the enemy. Then, against regulations, she let the officer borrow her own horse to hasten his retreat, which left her more vulnerable to attack.