ACROSS
9 Soldiers trapped in remote Germany in an area surrounded by homesteads (8) FARMYARD {F{ARMY}AR}{D}
10 Dish made using a slice of veal with popular Indian pulse and eggs (8) VINDALOO {Veal}{IN}{DAL}{00}
12 Sticky notes ultimately seized by six detectives (6) VISCID {VI}{n..eS}{CID}
13 Tell Rosy to roam in streetcars (8) TROLLEYS*
15 Troublemaker, yet I condemned blasphemy (7) IMPIETY {IMP}{YET+I}*
17 A female pilot embracing sailor in a friendly manner (7) AFFABLY {A}{F}{F{AB}LY}
20 Roll of very small size - discard occasionally (2,3,3) ON AND OFF {NANO<=}{DOFF}
22 Always check before end of day to be happy (6) CHEERY {CH}{EER}{daY}
26 Good fact about Katrina, for example (3,2,3) ACT OF GOD*
27 New T-shirt is long (6) THIRST*
DOWN
1 Show unionist wearing short skirt backward - it's rare (8) ACTINIUM {ACT}{M{U}INI<=}
2 Inclination to ignore the French forecast (10) PREDICTION PREDIleCTION
3 Upper-class model having sex appeal came first (6) TITLED {T}{IT}{LED}
4 Underwear primarily needed inside frosty building (1-6) Y-FRONTS {YFRO{Ne...d}TS*}
5 Snub shrub (5-3) BRUSH-OFF {SHRUB}* [RA]
6 Legend of Padmanabhaswamy, Thiruvananthapuram (4) MYTH [T]
7 Father is extremely kinky and active (6) FRISKY {FR}{IS}{KinkY}
14 Trained dealers in authority (10) LEADERSHIP {DEALERS*}{HIP}
16 Efficient yet impolite (8) THOROUGH {THO}{ROUGH}
18 Leaseholder mainly receiving Arkansas government grant (8) LARGESSE {L{AR}{G}ESSEe}
19 The part of vehicle furthest from the curb is in an illegal position (7) OFFSIDE {OFF}{SIDE} (Correction - [DD] - See comments
21 Suggestion given by sister outside a church (6) NUANCE {NU{A}N}{CE}
Reference List
Germany = D, Second = S, Child = CH, Female = F, Sailor = AB, Check = CH, Unionist = U, The in French = LE, Model = T, Sex appeal = IT, Father = FR, In = HIP, Government = G, Church = CE, Unknown = Z