Can you check your military email with Chromebook or Chrome OS?

I check my army.mil via Chrome all the time.

https://militarycac.com/chromebook.htm

You can check your military email with a Chromebook or Chrome OS using various email checker tools available on the Chrome Web Store. While native support for military email systems may vary, many users have successfully accessed their military email accounts through web-based interfaces compatible with Chrome browsers. These email checker tools often provide simplified access to email services, allowing users to view and manage their messages conveniently on their Chromebook or Chrome OS devices. You can find one of the email checker tools on the https://verif.email/en/email-checker/ website.

One option that You can try is to purchase a CAC card reader. Not sure if it's compatible with a Chromebook or Chrome OS.