Two relatively uncommon partitions of the field, mostly seen in French heraldry. On the left is chapé; the field is the middle portion. On the right is chaussé, which is essentially a pile expanded to the width of the top of the shield. See other examples here and here. The arms are, respectively, Boutren of Franqueville (gules chapé argent) and De Bressy of Sablous (gules chaussé ermine).