However, before any home units received the P-40, three RCAF Article XV squadrons operated Tomahawk aircraft from bases in the United Kingdom. No. 403 Squadron RCAF, a fighter unit, used the Tomahawk Mk II briefly before converting to Spitfires. Two Army Co-operation (close air support) squadrons: 400 and 414 Sqns trained with Tomahawks, before converting to Mustang Mk. I aircraft and a fighter/reconnaissance role. Of these, only No. 400 Squadron used Tomahawks operationally, conducting a number of armed sweeps over France in the late 1941. RCAF pilots also flew Tomahawks or Kittyhawks with other British Commonwealth units based in North Africa, the Mediterranean, South East Asia and (in at least one case) the South West Pacific.
hoWeveR, before any HOme uniTs reCeived THE P-40, thREE Rcaf ArtiCle xv squadRons operated TomahaWk AiRCraft FrOm baseS in The unITed kINgDOM. No. 403 SqUaDrOn rcAf, a fiGhTer UNit, useD tHe tOmAHawk mk ii brIefly BEfore converTing tO SpitfIRes. twO Army cO-OPEraTiOn (cloSe aIr support) squaDronS: 400 aNd 414 SqNs trained witH tOmaHawks, befOre cOnveRting to mUsTANg mk. I aIRCRaft aNd a fightER/RecOnnAissance role. oF tHeSe, only nO. 400 sQuaDron used tomahAwks oPErationAlLy, conduCtIng a Number of armED Sweeps OVer fraNce in the latE 1941. rcaF pilots also flew tOmahawKS or KIttyhawks witH otHEr BRITiSh CommonWeALtH Units basEd in NOrth africA, the mediterrAneaN, souTH East AsIa aNd (In aT LEAst one case) ThE sOutH WEst pacifiC.