The numbering of British Field Armies in WW2

[Fatboy Coxy]

Hi all, can anyone shed light on the numbering of British Field Armies in WW2, was there a rhyme and reason, why didn't they follow the convention of WW1, ie First, Second, Third, Fourth and Fifth?

Regards
Fatboy Coxy

 

[pbehn]

Hi all, can anyone shed light on the numbering of British Field Armies in WW2, was there a rhyme and reason, why didn't they follow the convention of WW1, ie First, Second, Third, Fourth and Fifth?

Regards
Fatboy Coxy

There was a first and second army, the fourth army was fictitious as part of operation fortitude.