He was then over Estonia, right over the German-Soviet front line.

他在爱沙尼亚上空，正是苏德前线上空。

youdao

Since the outbreak of the Soviet-German war, the United States, Great Britain and Soviet Union had discussed many times about the issue opening a second front in western Europe.

自从苏德战争爆发以来，美国、英国、苏联曾经多次商讨在欧洲西部开辟“第二战场”的问题。

youdao

For the first few weeks after the landings, casualty rates sometimes matched those of the Western Front in World War I (or of the German-Soviet fighting).

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