Arsenal were pitted against Schalke, Olympiacos and Montpellier in this season's Champions League group stages.
Read on below to find out more about each of our Group B opponents.
Full name: FC Schalke 04
Last season: 3rd (Bundesliga)
Manager: Huub Stevens
Stadium: Veltins-Arena (61,673)
- Arsenal last faced the German side in the 2001/02 grpup stage. The Gunners won 3-2 at Highbury before going down 3-1 in Gelsenkirchen
- They have won one major European trophy - the UEFA Cup in 1997
- Schalke are seven-time winners of the Bundesliga but have not lifted the trophy since 1957/58
Full name: Olympiacos Piraeus
Last season: 1st (Greek Super League)
Manager: Leonardo Jardim
Stadium: Karaiskakis Stadium (32,115)
- Olympiacos have won 39 Greek league titles, picking up 14 of the last 16 championships
- Arsenal have drawn them in three of the last four Champions League group stages, winning both previous matches at Emirates Stadium but losing away with young sides
- Olympiacos were founded in 1925, making them just 87 years old
Full name: Montpellier Hérault Sport Club
Last season: 1st (Ligue 1)
Manager: René Girard
Stadium: Stade de la Mosson (32,900)
- Montpellier won their first ever Ligue 1 title last season
- Summer signing Olivier Giroud helped the French side win the title last season, scoring 21 league goals (making him joint-top league goalscorer)
- The club were only founded through a merger in 1974
