Also found on Fort Ord military base

[missoiula4me]

1) looks old - maybe pin to something

2) looks like remnants of aerial flare

3) looks like mechanism from grenade - spring hinge and threaded end

 

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[NOLA_Ken]

The second item I think is the fins from a flare. The third one is definitely part of a hand grenade fuse.

 

[nhbenz]

Third one I'd say smoke grenade.

Added: very similar to the head on a Pineapple, but no cutout at the base. Different than Lemon or Baseball in that those have a protrusion at the base; http://gunshowgoods.com/zencart/index.php?main_page=product_info&products_id=39

But I'm not an expert, and surely don't mind corrections.

 

[recondigger]

2nd item is fins from a flare or star cluster. They are hand launched I fired a ton of them. The 3rd item is fuse from a grenade prob. Smoke.

 

[HutSiteDigger]

Hey kewl finds! I just want too let you know too be extra careful hunting those old military places (I'm sure you know that)! Back then the military didn't have strict guidelines like we do today when it comes too safety during military drills and how you go about conducting military training and it wouldn't surprise me if there was a few active hand-grenades or who knows what laying in there somewhere!