By mid-1918 the Camel was becoming obsolescent as a fighter , limited by its slow speed and comparatively poor performance at altitudes over NUMBER@1 ft -LRB- NUMBER@2 m -RRB- .

By NUMBER@3 the Camel was becoming a poor fighter , it became slow and had bad performance at altitudes over NUMBER@1 ft -LRB- NUMBER@2 m -RRB- .
