The normal entertaining, accessible, fare from Dac.

Solving time: 16 mins

* = anagram

ACROSS

1 SU PER    rep us  all reversed    remember rep = traveller    less of them than before, but I’m sure they’re still around

4 (GO TH) ROUGH

11 FOUR-EYED    Count the i’s in initiation “mentioned”

12 WHEN WE ARE MARRIED    Play written by J B Priestley

16 V (IS) A   Va = Virginia

18 IN D US(States)  TRIAL ACTION    My favourite clue - top quality.

21 F  Sophia LOREN CE

25 (S)CHILLER

DOWN

2 PICTURE POSTCARD    (Super trip to Dacc(a))*

3 ROT (HE) SAY

4 GOD-FEARING    Another super clue with misleading join at “Religious journey”  Go = journey (vb) (a friend)* Galilee (originally)

6 RANCHO   Hidden   Definition “Here you’ll see farm workers”  i.e. the place.

8 HORSETAIL  (The sailor)*

16 STAR(t) RING   Richard Wagner opera cycle.

23 AL(i)BI    A French town.

France	United States	United Kingdom	Norway

Solving time approx. 10 minutes

Brendan is also Virgilius in the Indy, so I was expecting some thematic content in a reasonably straightforward puzzle - and I wasn’t to be disappointed. I looked at 10 and 12 first and quickly got the theme, although 3dn held me up a bit at the end until I got the crossing W.

Across
9 T(R,ICOL=loci rev)OUR - I was helped by expecting what the answer would be before looking at the clue.
10 S(TAR)S - see 12
11 OUT,SWAM(i) - took far too long to equate crawling with swimming, one of the last answers I got.
12 S(TRIPE)S - got this thematic answer very quickly along with 10.
13 GLORY - Old Glory is the nickname of the American flag.
14 CASEBOOKS - not sure about the wordplay though. Is this a reference to Dr. Finlay’s Casebook? [Much more sensible suggestion from CarlH is The Casebook of Sherlock Holmes. ]
16 RED WHITE AND BLUE - see for yourself above!
19 SUBMARINE (as number 1)* - “at sea” being a very apposite anagrind.
21 BAC(k)UP - I needed the checking letters before remembering that this is a place.
22 FINE LEG (feeling)* - it’s a fielding position, so cricketer is quite a loose definition. Perhaps a “perhaps” is required?
23 PENN,ANT - ref. William Penn, who was a Quaker (Society of Friends).
24 ATE IN - “pub after eight, say” being a slightly confusing homophone indicator.
25 UNION,JACK
Down
1 S(T(erro)R)ONG,ARMS
2 D(1)R,TRO(A)D
3 NO(R)WAY - nice &lit., as Norway is indeed a kingdom.
4 PO(E)M - Pom being Australian slang for an Englishman.
6 AS,CRIB(b)ED
7 SA(PP)HO - PP inside O=love,HAS, all reversed. Also &lit, as she wrote love poetry (to both men and women - she was known as Sappho the Lesbian because she was from Lesbos, and that’s where we get the word from).
15 S,WEEPS,TAKE
18 LACK,A,DAY - it appears that “moment of glory” defines “day”, so it’s probably referring to a line from a poem that I don’t know. [Or, as suggested by Testy, just as in phrases like "every dog has his day" etc. ]
21 BANANA - nice cryptic definition, but I don’t suppose anyone was fooled for long.
22 FLAG - double definition, and part of the theme.

Pretty tough. I haven’t got a convincing answer for 14D, I can’t work out the wordplay for the long clue and I needed Google to get 15D.