Complex sentence: This was manifested in the atrocities at Jasenovac concentration camp and elsewhere, the scale of which shocked even German and Italian occupying forces, noted in the reports of Wehrmacht General Edmund Glaise von Horstenau and the Gestapo to their superiors.
Split into simpler sentences: This was manifested in the atrocities at Jasenovac concentration camp and elsewhere. The scale of the atrocities shocked even German and Italian occupying forces, noted in the reports of Wehrmacht General Edmund Glaise von Horstenau and the Gestapo to their superiors.