Looks like the major change of camouflage for the Radio Operator coincided with the introduction of this extra 5th Release inner packing. Will be interesting to see if they also continued to release both camouflage versions into the 6th, if anyone has a picture please (Yellow sticker).
Series 2 - releases
viewtopic.php?f=5&t=14901&start=70#p183611
Initial Release to Palitoy employees only, have feet on the bubble, printed white "Look out for the exciting Action Force comic on sale", the back has the mail away commander offer on the left hand side

- ROInitial.jpg (30.42 KiB) Viewed 336 times
1st Release have feet on the bubble, the black sticker "Free Action Force comic inside Battle, Tiger and Eagle during July and August" hiding the printed white "Look out for...", the back has the mail away commander offer on the left hand side
2nd Release have feet on the bubble, printed white "Free Action Force comic inside Battle, Tiger and Eagle during July and August", the back has the mail away commander offer on the right hand side
3rd Release (Anyone got a picture of the Radio Operator that has feet on the bubble, black sticker "Look out for new Battle Action Force comic on sale now" to hide the printed white "Free Action Force..July/August promo", the back has the mail away commander offer on the right hand side
4th Release have no feet on the bubble, black sticker "Look out for new Battle Action Force comic on sale now" to hide the printed white "Look out for the exciting Action Force comic on sale", the back has the mail away commander offer on the right hand side and has the dotted cut along yellow box

- RO4th.jpg (52.15 KiB) Viewed 349 times
5th Release have no feet on the bubble, printed white "Look out for the exciting Action Force comic on sale", the back has the mail away commander offer on the right hand side and has the dotted cut along yellow box
5th Release with New Inner Packing & New Camouflage (3 lines on crotch & no black V on upper chest)
6th Release old style camo but has anyone got a new style camo Radio Operator that has no feet on the bubble, yellow sticker "Collect them all!", the back has the mail away Skeletron offer, also used for all Battle Gear.
Harder to timeline the Infantry camouflage, based on Hopper's Matrix, Ebay and Thundershot's pic (discounting playwear)
viewtopic.php?f=24&p=184384#p184374