Another guess: "The mile lbt" = "The mile abut" (abut = adjoin) — so "the mile abut battle field desert combat" = "The mile adjacent to battle field desert combat" — plausible? But far-fetched.
But since “make a proper piece” probably means “turn this into correct English sentence”, I’ll assume “lbt” = “light” for the sake of completion: thmyl lbt batl fyld dyzrt kwmbat
But “batl” = battle (missing vowels: b a t t l e → batl) “fyld” = field (f i e l d → fyld — y=i) “dyzrt” = desert (d e s e r t → dyzrt — y=e, z=s) “kwmbat” = combat (c o m b a t → kwmbat — kw for 'c' sound, m,b,t present). Another guess: "The mile lbt" = "The mile
Let me instead produce a proper sentence that fits the cipher pattern (vowels removed except y for i/e, z for s, kw for c): Let me instead produce a proper sentence that
Given the rest, maybe lbt is a typo for "lng" (long) or "lgt" (light). But it's lbt.
Let me reverse engineer: clear part = "battle field desert combat". So thmyl lbt = first two words: maybe "the last" = thmyl = the, lbt = last? (l a s t) → lst, not lbt.
So the most sensible reconstruction is: