Maybe an escalatinng Nanking incident (Chinese: 南京事件)?
It occurred in March 1927 during the capture of Nanjing (then Nanking) by the National Revolutionary Army (NRA) in their Northern Expedition. Foreign warships bombarded the city to defend foreign residents against rioting and looting. Several ships were involved in the engagement, including vessels of the Royal Navy and the United States Navy. Marines and sailors were also landed for rescue operations. Both Nationalist and Communist soldiers within the NRA participated in the rioting and looting of foreign-owned property in Nanjing.