Complex sentence: While the M18 was capable of high road speeds this attribute was difficult to use successfully in combat, although most M18 crews found the higher speeds especially useful to flank German tanks which had relatively slow gun traverse speeds.
Split into simpler sentences: While the M18 was capable of high road speeds this attribute was difficult to use successfully in combat. However, most M18 crews found the higher speeds especially useful to flank German tanks which had relatively slow gun traverse speeds.