An army position was attacked by two so-called Mai-Mai armed groups near the town of Beni in North Kivu province yesterday, it said.
Since the beginning of 2017, Mai-Mai militias have regularly attacked Congolese army positions in the region and in neighbouring South Kivu.
"At the moment, the situation is under the army's control," a regional spokesperson for the military, Lieutenant Jules Tshikudi, told AFP.
"We routed the Mai-Mai who attacked our position in Bulambo Isale. The death toll is four Mai Mai dead and four wounded. Two members of the national armed forces died in combat."
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Armed Congolese groups and foreign forces control swathes of territory in North Kivu province and fighting is relatively common.
The Mai-Mai became prominent as armed community militias during the Second Congo War (1998-2003).
They teamed up with the Kinshasa government to battle invading troops, notably from Rwanda as well as foreign rebels. Some Mai-Mai forces never gave up the weapons they got from the regime.