The Christopher Ward above is a dive watch not a field watch, the only similarity is the barrel shaped case design really.
As for Hamilton and CWC, those two brands along with a small handful of others were employed back in the day by both American and British military forces to manufacture field watches to W10 and G10 specifications, so they all looked similar. These days CWC still continue making the same watches but with a more modern Japanese movement inside. Hamilton have gone the modernisation route and decided to fully re-issue models like in the Pilot Pioneer Mechanical with higher specs all round and spring bars instead of fixed bar lugs which CWC still use and of course higher grade movements.
I have a
Classic Bond NATO coming from Barton Bands for the Hamilton, feel that this will be a nice strap rotation for it between the Zuludiver rubber and Bond which with the vision in my mind's eye should suit the watch really well. Was initially going to get the genuine Geckota Vintage Bond from Watchgecko but the Barton version has wider holes and bigger milled buckle which means I can use the modern Hamilton milled buckle that came with the watch whereas with all the other Bond NATO straps the holes are small so I'd risk fraying the holes over time using a thicker buckle tongue.
I'm still feeling the same about the Khaki Pilot though, if it was my only watch, I'd be perfectly happy with it.
CWC Mellor 72 arrived yesterday. Enjoying it so far.
A worthy nod to the late Mellor himself
The only thing I found curious about it is they use 18.5mm lug widths, so the 18mm NATO has a tiny gap either side, and 19mm straps aren't all too common although Watchgecko and a few others have been steadily increasing range.