Complex sentence: From the outset, the regiment was set apart from others by way of its distinctive headdress as it was issued with the black armoured corps beret, upon which members of the regiment wore the large Rising Sun hat badge.
Split into simpler sentences: From the outset, the regiment was set apart from others by way of its distinctive headdress. Issued with the black armoured corps beret, upon which members of the regiment wore the large Rising Sun hat badge.