Bob & HtB - thanks for your comments here
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As you will have seen, my practical experience here was limited to a couple of hours in the middle of a family tour. The only advice which I can pass on to others regarding walking this battlefield is to repeat that which was given on the notice boards provided by the Province. (These may be available in leaflet form somewhere, but I could not find one)
The maps and their illustrations, as well as the English translation are the copyright of the Provincia di Belluno, as is
ALL responsibility for the comments on the 'difficulty' of the various routes.

No.1:
FORCELLA LAVAREDO ROUTE. From Forcella Col di Mezzo (2315 m) to the rocky foreparts of Sasso di Landro (Quota 2536) and through communications trenches towards west/east until Forcella Lavaredo. Trail marker: tracks. Descent: return to Forcella Col di Mezzo crossing the scree slopes below the northern rock faces of the Tre Cime. Trail marker: tracks.
ELEVATION GAIN/LOSS. 400-500 metres, taking into consideration that it is at high altitude characterized by continuous up and downs
ESTIMATED TIME. 3-4 hours
DIFFICULTY. Excursion route
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No.2:
QUOTA "2385" AT PIANI DI LAVAREDO ROUTE. From Forcella Lavaredo (2457 m) to Forcella Col di Mezzo (2315 m) across the "Piani di Lavaredo" and the Rifugio Auronzo (Auronzo Hut) (2330 m). Starting point: Rifugio Auronzo.
Trail marker no. 104 – tracks – not marked.
ELEVATION GAIN/LOSS.
NB: There is a mistake on the board which I saw and these details were not given in English. However, the Italian version suggests about 140 metres.
ESTIMATED TIME. About 1,30 hours
DIFFICULTY. Excursion itinerary of great historical interest.
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No.3:
CRODA DELL'ARGHENA ROUTE. From Malga Rinbianco (1841 m) to the summit of Croda dell'Arghena via Forcella dell'Arghena; it is possible to visit the base of logistics at Rinbianco.
Descent: through the same trail; red trail marker.
ELEVATION GAIN/LOSS. About 400 metres
ESTIMATED TIME. About 3-3,30 hours
DIFFICULTY. Route along military roads and paths; excursion itinerary except for some exposed passages in the final part of the summit climbing and in the visiting of the defensive works.