The US Africa Command statement on Tuesday says Monday's airstrikes were in the vicinity of Baqdaad after the military's Somali partners "were engaged by al-Shabab militants." It does not say whether any of the partners were killed.
Another US airstrike on Sunday killed six al-Shabab members near Dheerow Sanle in Lower Shabelle region.
The US military says no civilians were injured or killed in any of these airstrikes.
The US carried out at least 47 such airstrikes last year in the Horn of Africa nation.
The al-Qaeda-linked al-Shabaab continues to control large parts of Somalia's southern and central regions and carry out deadly bombings against high-profile targets in the capital, Mogadishu.