The final episode

Don't want to give up too much info that would be consider Spoiler info.
But the final episode that they aired was episode 37, only 35 were actually made.
When Rico took command of the Roughnecks. The last thing that we heard/saw was Higgins doing his voice over saying "The end was near. The final battle, humanity's last stand was just around the corner." And it showed a bunch of bug transports near the moon, looking at the earth.

The fans really want a conclusion or continuation of this series. And hey we did make a difference. Originally they were just going to release 1 or 2 DVDs. But as a direct result of fan support, we got them to put the entire series on DVD, some of the audio commentary even thanked the fans, and acknowledged the support they received to get the DVDs out there. Hopefully, they'll listen to us, and produce the ending.
In closing, a quote from Private Higgins during the Zephyr Campaign "Remember the Roughnecks! The best Earth had to offer!"