Complex sentence: In response to this address, the people of Greece reportedly spontaneously went out to the streets singing Greek patriotic songs and shouting anti-Italian slogans, and hundreds of thousands of volunteers, men and women, in all parts of Greece headed to army recruitment offices to enlist.
Split into simpler sentences: In response to this address, the people of Greece reportedly spontaneously went out to the streets singing Greek patriotic songs and shouting anti-Italian slogans. Hundreds of thousands of volunteers, men and women, in all parts of Greece, headed to army recruitment offices to enlist.