Well, they do have more resources then IOTL, some agreement for military equipment was made, but we are rather limited in details. There was something about fighter planes, Brewster Buffalos I believe, some refits done on some Dutch warships (ASDIC and hydroplane removal), but some more details would be nice to see. It could be anything from personal arms, vehicles, artillery to radios, and so many other things a military needs.Where to find the DEI resources for the endeavor? The USMC had defense battalions. They apparently developed airdrome defense battalions in mid 1942, per Niehorster. Then again, they have more resources.
I Do think that we should really consider just what effects the Japanese occupation of Indochina means for the Allies in the SEA and South Pacific, when considering the prior events that occured ITTL. The CW/DEI cooperation has been going on for some time now, Dutch ships (light cruiser and some DDs if I recall correctly?) Have been operating alongside CW navies for some time, and that will help a lot. Not to mention the fact that an alternate port has been developed on Java, or that some plans have been made to share information with the Dutch or that CW could send forces to operate in DEI, with plans and other arrangements in place.
Morale wise, how would an average KNIL officer or a soldier feel if he saw RN/RAN/RCN ships out on drills with Dutch ships, ir in their harbours? We can also guess that Brewster Buffalos, for all their faults, would also be received warmly, or whatever else the CW has to spare, be it crates of L-Enfields or MGs, radios, mortars, or trucks, medicine, rations, whatever, it does matter a lot. And this has been going on dor months now, trickle it may be, but at least we can hope that they see situation as merely desperate, instead of outright catastrophic.
Now, it would be ideal if British had tanks to send, but between N.A, Britain and aid to SSSR, one does wonder what is there to be sent, and what they would be willing to send to Malaya, let alone to the KNIL.