Military power of the Baltic States before 1939

[eppanzer]

Did any treaties provide for such retreat and internment?

but also a change to the general military doctrine, which had included Germany in the ranks of
“enemies”.

Was the USSR included?

No, it didn't. Lithuania had not any treaties and had to count only to Hague convention, International law and antagonismes between other countries. A case similar to the Polish Army internment by Lithuania in the 1939. By the way, although this internment was very complicated both economical and political, Lithuanian government and Lithuanian society had served their international and human duties.
USSR was not included, because Lithuania had not common borders with Soviet until unfair defeat of Poland. And, unfortanetely, I'm very sad about it, the threat for Lithuanian independency in the 1920-1939 years came from Poland, not from USSR, when some kind of the support was shown by USSR.
Concept of the guerrilla warfare had a huge influence on the Uprise of the June, 1941 and on the post-war long-lasted partisan movement as well.

[henryk]

Thank you for your response, eppanzer.

A case similar to the Polish Army internment Lithuania in the 1939. By the way, although this internment was very complicated both economical and political, Lithuanian government and Lithuanian society had served their international and human duties.

Yes, I have read only about good treatment.