Militarily it is a speed bump.
Politically, an attack on Lithuania that kills or wounds the Germans draws Germany into the conflict, i.e. they are hostages.
Politically, an attack on Lithuania that kills or wounds the Germans draws Germany into the conflict, i.e. they are hostages.
Lithuania is a NATO member.
Germany is a NATO member.
An attack on Lithuania is going to result in an article V invocation of the treaty, and whoever attacked Lithuania is going to find themselves at war with the entire NATO alliance.