It should but no sure about it. At least it stacked with Germany's UA back in G&K.
That basically means all sea units are maintenance free if you play as ottomans
More interesting question is does Elite Forces(Wounded Military Units inflict +25% more damage than normal) stack with Japans UA?
Do you keep your ranged(or other) units below full health so they inflict more Damage when playing as Japan if you have EF tenet?