You MAY:

• Download, use and play with this addon
• Host or rent a server that includes this addon
• Take screenshots, renders and overall 2D imagery with the models in this addon
• Include this addon in a modpack

You MAY NOT:

• Sell, redistribute or upload this addon to a website, webstore or any other online solution
• Claim to be the author, renaming the addon to facilitate confusion about authorship or mislead other players about authorship
• Use this addon for illegal reasons (I know this is a WW2 addon, but please do NOT be weird with it)

TLDR: As long as you don't try to "steal" the addon from me by making it available for download somewhere else or by trying to sell it, even if you modified the addon, you should be fine. Curseforge allows content creators to profit from downloads, so if you steal that from me, I'll stop releasing my content to the wide public.