I stumbled upon this word ( Military packages ) and found a video on SFTV.

Never knew this service existed until now.

Blick dated article in DE

Is this still being done / offered ?

I have no experience of "fress-pakete", but it wasn't THAT long ago when my Swiss girlfriend (now Mrs TD) did her military service (she volunteered for it during an idealistic/patriotic phase) and she'd give me the address of her base and I'd just write it on the front of an unstamped envelope and send off my letters to her, free of charge courtesy of the Swiss authorities.

I'd also get (again no cost to sender) "Feldpost" from her in reply (often next day)

I think that between the two of us, and thanks to our intense correspondence, we must have cost the Swiss army a few bob in postage...

Hi jrspet,

Fresspäckli were an absolute hit in camps I attended. The more sweets they contain, the better

They can be frowned upon because kids sometimes don't want to share, because they can lead to jealousy among the kids etc.
But they can be sent (as TrainDoctor said) to people on military duty with "Feldpost" (for free - albeit only a certain number of packages a day if I remember correctly).

I'm in two minds on the subject - sending your kid a package of his/her favorite candies, foods and maybe a toy/small game will make him/her happy and remind him/her of you, but they sure can spread discord among kids. But in general, Lagerleiter (people who run camps) have rules regarding this issue.

Uhhh yea ,remembering them well .Ask every girl to send some Landjeagger .rum etc , etc

As the others have posted this is still in service. You may send a letter or a parcel for free if the recipient is in the military service. Of course this had been started in an area without mobile phone, laptops and even internet (how could we even live back then ) and used to be very popular. As a girl I didin't do military service but used to send both parcels and letters to male friends and it was always nice to receive a letter or postcard from them - sometimes also unexpectedly good memories!

regarding the Fresspäckli in camps: we used to tell parents at the scouts that any content would have to be shared so most parents sent a cake or cookies and maybe some other sweets. The longer the camp lasted the bigger the parcels