Fifa then officially confirmed the final squads a day later on Tuesday, 2 June.

From that point, teams can only make changes to their squads for two reasons.

The first is in the event of a player sustaining a serious injury or illness. This player is allowed to be officially replaced in the squad up to 24 hours before kick-off of the team's first match of the tournament.

Scotland made a change to their final squad 12 days after head coach Steve Clarke first named his 26-man side, following an injury to Napoli midfielder Billy Gilmour during their friendly win over Curacao.

Manchester United teenager Tyler Fletcher was selected in Gilmour's place.

South Korea, Bosnia and Herzegovina, Canada, Ivory Coast, Sweden, Austria and DR Congo have also had to make alterations to their initial final squads.

After the 24-hour cut-off, a team is not allowed to make any further changes to their outfield playing squad.

The only exception comes in the form of goalkeepers.

If a goalkeeper sustains a serious injury or illness, they are allowed to be replaced at any time during the tournament.

A team's final squad can contain between 23 and 26 players, of which at least three of them must be goalkeepers.

Like many of their tournament rivals, both England and Scotland named final squads of 26 players that included three goalkeepers.

This article is the latest from BBC Sport's Ask Me Anything team.